Friction-clutch



(No Model.)

L. D.DANA. FRIGTION CLUTCH.

No. 431,446. Patented Jufy 1, 1890.

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UNITED STATES PATENT OEEICE.

LESTER D. DANA, OF VVAUPAOA, WISCONSIN.

FRICTloN-CLUTCH.

SPECIFICATION forming part of Letters Patent No. 431,446, dated July 1, 1890.

- Application tiled April 2l, 1890. Serial No. 348,875. (No model.)

To all whom it may concern,.-

Be it known that I, LESTER D. DANA, a citi-V zen of the United States, residing at Vaupaca, in the county of Vaupaca and State of lVisconsin, have invented new and useful Improvements in Friction-Clutches, of which the following is a specification.

This invention relates to an improvement in friction-clutches; and the invention conssts in the details of construction set forth in the following specification and claims and illustrated in the accompanying drawings, in which Figure l is alongitudinal section of a clutch along @j y, Fig. 2. Fig. 2 is a section along m, Fig. l.

In the drawings, the letters A B indicate two shafts, which can be bound together by the clutch. To the shaft Ais fixed a disk C, and to the shaft B is fixed a disk D. The disk O is provided with a flange E. About the shaft A sits a loose collar F. Between the collar F and flange E are interposed wedges G I-I. The disk D is shown connected to the wedges. In the drawings pins I on the disk D enter suitable sockets on the wedges G; but of course the pins might be on the wedges and the sockets in the disk D, or any other well-known suitable connection might be used for connecting the disk D and the wedges. When the shaft A, with the disk O,is turned in the direction ofarrow l, or the shaft B with the disk D, is turned in the direction of arrow 2, the wedges G II of each pair of wedges are moved in a direction tending to bring the narrow parts of the wedges together, so that said wedges do not bind or jam between the collar F and flange E and the shafts A B can turn independently of one another; but if the shaft A and disk O are turned in the direction opposed to arrow l, or the shaft B, with the disk D, is turned in the direction opposed to arrow 2, the wedges G I-I are moved to bring the broad parts of the wedges together, so that said wedges jam or bind between the collar F and flange E, thereby compelling the disks C D and shafts AB to turn together. The collar protects the shafts against wear by the Wedges.

Vhen the wedges G II are worn, the wear 5o or unsuitable it can be removed and replaced 5 5 by another wedge without the remaining wedges being disturbed. The disk D, in order to support the pins I, need not necessarily be ot' disk form, since arms or braces for supporting the pins will also be operative; but a disk D is of advantage, since it can be made to cover the flange E so that no dust or foreign matter will have access to the wedges G H.

In certain cases the disks C D may be mounted on one and the saine shaft, one firmly and the other loosely, as described iu my patent, No. 205,362, dated June 25, 1878.

What I claim as new, and desire to secure by Letters Patent, is-

l. A friction-clutch composed of a disk provided with a flange, aloose collar, and wedges interposed between the collar and flange, in combination with a second disk connected to the wedges, substantially as described..

2. A friction-clutch composed of adisk provided with a flange, a loose collar, and two pairs of wedges interposed between the collar and the flange, in combination with a second disk connected to one wedge in each pair 8o of wedges, substantially as described.

3. A friction-clutch composed of adisk provided with a flange, a loose collar, and two pairs of wedges interposed between the collar and flange, in combination with a second disk 8 5 LESTER D. DANA.

Vitnesses:

C. S. OGDEN, KATE OGDEN. 

